C.144 in2 = 1 ft2,
hence 720 in2
(1 ft2/ 144 in2) = 5 ft2

D.1728 in3 = 1 ft3,
hence 6048 in3
(1 ft3/1728 in3) = 3.5 ft3

E.The area of the material is 4ft x 20
ft =80ft2

F.This particular problem we have not
determined how to
do in class. However, one can deduce how to work the problem from what
is asked
for in the problem—i.e. what volume (in3) is flowing per
second(s)?
Indeed the volume rate of flow can be determined by multiplying the
speed (or
velocity) times the area. Hence (6 in/sec)(1.5
in2)
= 9in3/sec